Home / 909,885.18-1,364,778.60-278,800.86

Finding the Fourth Proportional to 909,885.18, 1,364,778.60 and 278,800.86

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Solution

The fourth proportional to 909,885.18, 1,364,778.60 and 278,800.86 is: 418,186.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,885.18 : 1,364,778.60 = 278,800.86 : x
  2. Step 2: Convert to fraction form
    909,885.18/1,364,778.60 = 278,800.86/x
  3. Step 3: Cross multiply
    909,885.18x = 1,364,778.60 × 278,800.86
  4. Step 4: Simplify right side
    909,885.18x = 380,501,447,389.60
  5. Step 5: Solve for x
    x = 380,501,447,389.60/909,885.18
  6. Step 6: Final answer
    x = 418,186.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.